1.2

Convection currents in the mantle

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Vocabulary

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Heat Transfer- movement of energy from a warmer object to a cooler object.
Radiation- energy transfer through empty space.
Conduction- heat transfer by direct contact or matter.
Convection- heat transfer by movement of a heated fluid
Density- how much mass in a volume of a substance.
Convection Current- flow which transfers heat within a fluid.

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Outline

Radiation

• heat transfer to empty space
  • i.e the warmth from an open fire

Conduction

• solid meeting a liquid

Convection

• convection current
  • flow that transfers heat within a fluid

Convection in the Earth's Mantle

• Earth's mantle responds to heat